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Groundwork Tight

Groundwork Tight

Cold weather tight with durable support + serious pocketing

COLOR >>  
M's Groundwork Tight

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Hurry, only 2 left in stock!

THIS PRODUCT IS ONLY AVAILABLE TO JANJI COLLECTIVE MEMBERS

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JOIN JANJI COLLECTIVE

THIS PRODUCT IS ONLY AVAILABLE TO JANJI COLLECTIVE MEMBERS

Join now to unlock access

JOIN JANJI COLLECTIVE
run everywhere guarantee
free shipping over $55
free 60 day exchanges
Noah is 6'2" and wears size M David is 6'1" and wears size M William is 6'1" and wears size M Formfitting, 28" inseam, 
Size Chart

For longer runs through colder weather and shorter days, the Groundwork Tights have you covered with targeted extra protection, hi-vis reflective seams, and generous pockets to carry your all-day running essentials. Read more

Explore more

features

All about the Groundwork
Breathable, moisture-wicking fabric provides light compression with an unnoticeable feel in stride

Won't sag out
Durable nylon stretches with you and retains its shape while resisting odors

Won't fall down
A redesigned waistband with internal drawcord stays snug + comfortable

Extra support
Double-lined fabric in the front panel (from hip through thigh) for added protection + warmth

Pocket it
Double-tiered side pockets can stow a phone, hat, gloves + nutrition

Keep it separated
An internal waistband pocket can stash card/cash or key

Versatile storage
Dual-entry stretch pocket in the back can store nutrition or double as a pass-through for a shirt or light shell

Zipperless ankle design
Articulated ankle shaping and a laser cut hem allow easy on/off + adaptable wearability to roll up the tight when warm

Stay seen
Integrated hi-vis reflective tape along the side seams along with Janji signature blue reflective logo and “watermark” on back increases visibility in low light

materials + specs

Groundwork Knit
68% nylon, 32% spandex

Weight
243g / 8.6oz (M’s Medium)

Garment made in Vietnam

sustainability

Groundwork Knit is made using a premium grade nylon that has a significantly tighter woven filament than standard synthetics. Tighter filaments mean less microfiber shedding in the wash-cycle, plus greater durability of the garment (longer lifespan, more wearing).

Groundwork Knit fabric is also bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard.

Learn more about our sustainable initiatives here.

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Customer Reviews

Based on 80 reviews
73%
(58)
20%
(16)
4%
(3)
4%
(3)
0%
(0)
M
Michael S.C.
Wear it for: Running, Cycling
Product Fit: Runs large
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: S
Run larger

I am 5-10, 170lbs athletic build and mediums I could pull up to my chest - if you want a looser fit that's ok, but smalls fit much better not overly tight and right length.

J
J.L.
Wear it for: Running
Product Fit: Spot-on
Height: 5'4" to 5'6"
Usual Size: XS
Size Purchased: S
Great running baselayer, wish they made it in XS

Have already used this on a few runs and it performs great in the cold, 30-45 degree temperatures, so far. My only complaint is the lack of an XS size, which would likely be perfect for me at 120lbs and 5'6. Small is not too bad, though, and size is what I would expect.

R
Ryan M.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Awesome as expected.

Everything I’ve bought from Janji has been great! These are no different. Pockets in all the right places and perfect amount of compression. I’d recommend to everyone!

E
Evan R.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: L
Size Purchased: L
Favorite thing to run in

I purchased the midnight groundwork tights just as temps started dropping here. I run in the Mojave so there it can be anywhere from 60 and sunny to 20 with 40mph winds. These tights do it all. I think they perform best between 20-40 degrees mostly just for sweat management. So many pockets on these. I don’t bring a running belt with these since I can fit chews, wipes, iPhone 13 Pro Max, extra headband, and beanie all in the pockets and nothing moves since it rides on your lower hip. Bought a second pair. Absolutely my favorite thing to run in. Key to note that there is no liner underneath, which is not a problem for me but for modesty and moisture management, some people might want that heads up. Awesome product.

a
allan b.b.
Wear it for: Running, Climbing, Everyday wear
Product Fit: Runs small
Height: 5'7" to 5'9"
Usual Size: S
Size Purchased: M

M's Groundwork Tight

S
Shawn
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
Solid as always from Janji

Good fit, good material, great for cold weather runs

M
Michael O.
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
The GOATed running tights

These are perfect. The tightness is perfect. The pocket placement is perfect for phones. Material weight is perfect for 30 - 50 degree runs. They don’t run up or down during motion. s. I just love these.

K
Kenno R.
Wear it for: Running, Hiking, Camping
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M

Comfortable, durable, climate conscious

J
Jack
Wear it for: Running
Product Fit: Spot-on
Height: 5'10" to 6'0"
Usual Size: M
Size Purchased: M
incredbile

im a loser who falls for running brand marketing buzzwords, which means ive purchased gear from every running brand imaginable.. and these tights are without a doubt my favorite piece of running gear that i own. im writing this review after ~2 years of wearing these tights and they are still as nice as the day that i bought them (and ive used them a lot - i run in chicago winters) i really cant say enough about these tights. i gotta get more janji. no games with this gear, it's just good.

C
Christian B.
Wear it for: Running
Product Fit: Spot-on
Height: 5'7" to 5'9"
Usual Size: M
Size Purchased: M
Goldilocks of Running Tights

I have tried a lot of running tights in my day and these are by far the best I have found! The fit is perfect, the storage solutions were clearly made by runners (that's a good thing), and they feel fantastic when I'm racking up miles. I live in Chicago and on a regular winter day (25-40 degrees) these are perfect for keeping me toasty so I've got the endurance to keep going, but I'm not so hot that I'm sweating bullets and I feel like I need to head back halfway through my run. Absolutely fantastic product. Only regret is that I didn't buy more to begin with! After I wore my first pair and decided I wanted to stock up, every other color was sold out!